windows: use normalized path to check repository nesting current "localrepository._checknested()" uses specified path itself to compare against subrepo pathes. it is invoked from "hgsubrepo.subrepo()" or pathauditor (as callback), and both use "os.sep" as separator. this causes unexpected nesting check result, if subrepo configuration uses "/" as path separator for sub repo path. this path uses "/" to join path components (or apply "util.pconvert()" on path) to normalize.